mirror of
https://github.com/RGBCube/serenity
synced 2025-05-28 14:25:06 +00:00

Note there's a bit of an unfortunate duplication in the calendar enum generated by UnicodeLocale and the existing enum generated by UnicodeDateTimeFormat. The former contains every calendar known to the CLDR, whereas the latter contains the calendars we've actually parsed for DateTimeFormat (currently only Gregorian). The new enum generated here can be removed once DateTimeFormat knows about all calendars.
181 lines
6 KiB
C++
181 lines
6 KiB
C++
/*
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* Copyright (c) 2021-2022, Tim Flynn <trflynn89@pm.me>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/CharacterTypes.h>
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#include <AK/Optional.h>
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#include <AK/String.h>
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#include <AK/StringView.h>
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#include <AK/Variant.h>
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#include <AK/Vector.h>
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#include <LibUnicode/Forward.h>
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namespace Unicode {
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struct LanguageID {
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String to_string() const;
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bool operator==(LanguageID const&) const = default;
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bool is_root { false };
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Optional<String> language {};
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Optional<String> script {};
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Optional<String> region {};
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Vector<String> variants {};
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};
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struct Keyword {
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String key {};
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String value {};
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};
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struct LocaleExtension {
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Vector<String> attributes {};
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Vector<Keyword> keywords {};
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};
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struct TransformedField {
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String key {};
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String value {};
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};
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struct TransformedExtension {
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Optional<LanguageID> language {};
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Vector<TransformedField> fields {};
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};
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struct OtherExtension {
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char key {};
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String value {};
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};
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using Extension = Variant<LocaleExtension, TransformedExtension, OtherExtension>;
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struct LocaleID {
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String to_string() const;
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template<typename ExtensionType>
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Vector<Extension> remove_extension_type()
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{
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Vector<Extension> removed_extensions {};
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auto tmp_extensions = move(extensions);
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for (auto& extension : tmp_extensions) {
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if (extension.has<ExtensionType>())
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removed_extensions.append(move(extension));
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else
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extensions.append(move(extension));
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}
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return removed_extensions;
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}
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LanguageID language_id {};
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Vector<Extension> extensions {};
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Vector<String> private_use_extensions {};
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};
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enum class Style : u8 {
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Long,
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Short,
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Narrow,
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Numeric,
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};
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struct ListPatterns {
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StringView start;
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StringView middle;
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StringView end;
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StringView pair;
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};
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// Note: These methods only verify that the provided strings match the EBNF grammar of the
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// Unicode identifier subtag (i.e. no validation is done that the tags actually exist).
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constexpr bool is_unicode_language_subtag(StringView subtag)
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{
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// unicode_language_subtag = alpha{2,3} | alpha{5,8}
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if ((subtag.length() < 2) || (subtag.length() == 4) || (subtag.length() > 8))
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return false;
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return all_of(subtag, is_ascii_alpha);
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}
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constexpr bool is_unicode_script_subtag(StringView subtag)
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{
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// unicode_script_subtag = alpha{4}
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if (subtag.length() != 4)
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return false;
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return all_of(subtag, is_ascii_alpha);
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}
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constexpr bool is_unicode_region_subtag(StringView subtag)
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{
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// unicode_region_subtag = (alpha{2} | digit{3})
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if (subtag.length() == 2)
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return all_of(subtag, is_ascii_alpha);
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if (subtag.length() == 3)
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return all_of(subtag, is_ascii_digit);
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return false;
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}
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constexpr bool is_unicode_variant_subtag(StringView subtag)
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{
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// unicode_variant_subtag = (alphanum{5,8} | digit alphanum{3})
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if ((subtag.length() >= 5) && (subtag.length() <= 8))
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return all_of(subtag, is_ascii_alphanumeric);
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if (subtag.length() == 4)
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return is_ascii_digit(subtag[0]) && all_of(subtag.substring_view(1), is_ascii_alphanumeric);
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return false;
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}
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bool is_type_identifier(StringView);
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Optional<LanguageID> parse_unicode_language_id(StringView);
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Optional<LocaleID> parse_unicode_locale_id(StringView);
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void canonicalize_unicode_extension_values(StringView key, String& value, bool remove_true);
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Optional<String> canonicalize_unicode_locale_id(LocaleID&);
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String const& default_locale();
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bool is_locale_available(StringView locale);
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Optional<Locale> locale_from_string(StringView locale);
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Optional<Language> language_from_string(StringView language);
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Optional<Territory> territory_from_string(StringView territory);
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Optional<ScriptTag> script_tag_from_string(StringView script_tag);
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Optional<Currency> currency_from_string(StringView currency);
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Optional<CalendarName> calendar_name_from_string(StringView calendar);
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Optional<Key> key_from_string(StringView key);
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Optional<ListPatternType> list_pattern_type_from_string(StringView list_pattern_type);
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Optional<ListPatternStyle> list_pattern_style_from_string(StringView list_pattern_style);
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Optional<StringView> get_locale_language_mapping(StringView locale, StringView language);
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Optional<StringView> get_locale_territory_mapping(StringView locale, StringView territory);
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Optional<StringView> get_locale_script_mapping(StringView locale, StringView script);
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Optional<StringView> get_locale_long_currency_mapping(StringView locale, StringView currency);
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Optional<StringView> get_locale_short_currency_mapping(StringView locale, StringView currency);
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Optional<StringView> get_locale_narrow_currency_mapping(StringView locale, StringView currency);
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Optional<StringView> get_locale_numeric_currency_mapping(StringView locale, StringView currency);
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Optional<StringView> get_locale_currency_mapping(StringView locale, StringView currency, Style style);
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Optional<StringView> get_locale_calendar_mapping(StringView locale, StringView calendar);
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Optional<StringView> get_locale_key_mapping(StringView locale, StringView keyword);
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Vector<StringView> get_locale_key_mapping_list(StringView locale, StringView keyword);
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Optional<ListPatterns> get_locale_list_patterns(StringView locale, StringView type, StringView style);
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Optional<StringView> resolve_language_alias(StringView language);
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Optional<StringView> resolve_territory_alias(StringView territory);
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Optional<StringView> resolve_script_tag_alias(StringView script_tag);
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Optional<StringView> resolve_variant_alias(StringView variant);
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Optional<StringView> resolve_subdivision_alias(StringView subdivision);
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void resolve_complex_language_aliases(LanguageID& language_id);
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Optional<LanguageID> add_likely_subtags(LanguageID const& language_id);
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Optional<LanguageID> remove_likely_subtags(LanguageID const& language_id);
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Optional<String> resolve_most_likely_territory(Unicode::LanguageID const& language_id);
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String resolve_most_likely_territory_alias(LanguageID const& language_id, StringView territory_alias);
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}
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